Automatic carbon remover for internal-combustion engines



v 1,432,944, Patented 00t.24,1922.

. E v 1 I E R. T. ARNOLD.

AUTOMATIC CARBON REMOVER FOR INTERNAL COMBUSTION ENGINES. APPLICATION- FILED MAY 2|, I92I.

Fatented Get. 241, I922.

UNETEE STATES RALPH '1. ARNOLD, OF DETROIT, MICHIGAN.

AUTOMATIC CARBON REMOVER FOR INTERNAL-COMBUSTION ENGINES.

Application filled. May 21, 1921.

To all whom it may concern:

Be it known that I, RALPH T. ARNOLD,

- citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Automatic Carbon Removers for Internal-Combustion Engines; and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a device for automatically removing or preventing the formation of carbon upon the valves of internal combustion engines.

It it well known that the valve stems of an internal combustion engine frequently stick due to the formation of carbon thereon, thereby preventing the valves from properly seating,with a consequent loss of compression.

One of the objects of this invention therefore is to provide a mechanical device adapted to automatically remove the carbon from the stem-or prevent its formation-that the latter may be maintained bright and clean at all times and thus insure a proper seating of the valve.

In the drawings accompanying this specification:

Figure 1 is a vertical cross-sectional view through the cylinder of an internal combustion engine and valve showing a rotatable element loosely mounted upon the stem of the latter.

Figure 2 is a perspectiveview of the rotatable element removed from the valve stem.

Referring now to the letters of reference placed upon the drawings:

A, indicates a cylinder of an internal combustion engine, B one of its valves, C the stem of the valve and D the usual spring to return the valve to its seat. E, indicatesa rotatable element loosely mounted upon the stem provided with a plurality of radial wings E which may be slightly inclined that the device may more readily rotate upon thestem when acted upon by the charge of gas entering the cylinder or by the burnt gases escaping from the latter.

Serial No. $71,361.

The rapid rotation of the element E serves to keep the stem bright and free from the deposit of carbon or other matter which might cause the stem to stick in the wall of the cylinder and thus prevent the valve from returning to its seat,--with consequent loss of compression.

It will be obvious that changes may be made in the details of construction of this device without departing from the spirit of my invention.

Having thus described my invention what I claim is 1. In an internal combustion engine, a valve fitted with a valve stem, a rotatable element having projecting portions loosely mounted on said stem adapted to be acted upon by the passage of gas, whereby said element may be rotated and the stem and valve may be maintained bright and free from carbon deposit.

2. In an internal combustion engine, a valve fitted with a valve stem, a rotatable element loosely mounted on said stem provided with a plurality of wings adapted to be acted upon by the passage of gas into the cylinder or the discharge of spent gases therefrom, whereby said element may be rotated and the stem and valve may be maintained bright and free from carbon deposits.

3. In an internal combustion engine, a valve fitted with a valve stem, a rotatable element comprising a hub portion loosely sleeved upon the stem and a plurality of arc-shaped wings projecting radially from the hub portion, whereby when acted upon by the passage of the gas said valve stem may be maintained bright and free from carbon deposit.

4. In an internal combustion engine, a valve fitted with a valve stem, a rotatable element comprising a hub portion loosely sleeved upon the stem and a plurality of inclined arc-shaped wings integral with the hub portion and projecting radially therefrom, whereby when acted upon by the passage of the gas said valve stem may be maintained bright and free from carbon deposit.

In testimony whereof, I sign this specification in the presence of two witnesses.

RALPH T. ARNOLD. Witnesses S. E. THOMAS, IDA Gonna. 

